KR20100048638A - Engine room fire protection appatatus of heavy construction equipment - Google Patents

Abstract

PURPOSE: An engine room fire prevention apparatus for heavy equipment is provided, which detects vapor before the fire break out and drops the temperature by spraying water of high pressure to the engine. CONSTITUTION: An engine room fire prevention apparatus for heavy equipment comprises: an engine forming an engine driving force by burning the fuel provided from the fuel tank; an exhaust manifold and muffler discharging the exhaust gas burnt in the engine; a fuel shut-off valve(15) installed at one side of the fuel supply line; a vapor temperature detection sensor sensing the vapor within the engine room; a nozzle(16) spraying water; a water pump(18) transferring water to the nozzle; and a controller controlling the drive of the water pump and fuel shut-off valve.

Description

Engine Room Fire Protection Appatatus of Heavy Construction Equipment

The present invention relates to an engine room fire protection apparatus for heavy equipment, and more particularly, to detect a high temperature state of oil vapor in an engine room and to warn a driver, and to spray a high-pressure cooling water solution on an engine high temperature part to forcely lower the temperature of a high temperature part. In addition, the present invention relates to an engine room fire protection device for heavy machinery that has been improved to prevent fire by automatically shutting off fuel lines.

In general, heavy equipment such as excavators and loaders often cause a fire inside the engine room due to various causes such as engine overheating or short circuits. In the event of a fire, unless a fire extinguisher such as a fire extinguisher is installed in the heavy equipment, it will be impossible to prevent the burning of the vehicle.

As shown schematically in FIG. 1, in the conventional heavy construction equipment, the upper swing body 3 is mounted on the lower traveling body 6, and the upper swing body 3 includes the engine room 1 and the cab 5, It comprises a work device 7 having a boom or a bucket, and an engine 9 which burns fuel provided from the fuel tank 4 and generates an engine driving force (meaning engine output), and the engine room 1 The inside becomes a relatively high temperature state compared with the outside air by the heat generated from the engine 9.

In case of long-term high load work in the field, the temperature inside the engine room will be higher, resulting in a lot of oil vapor from the evaporation of diesel fuel and working oil, and the oil vapor will flow in the air. Cause a fire.

In consideration of the risk of fire caused by oil vapor, the national policy recently announced hydrocarbons from petrochemical products and organic solvents as volatile organic compounds and regulated not to exceed the allowable concentration in confined spaces. Measures to prevent and predict the fire caused by the generated vapor in advance have not been developed separately.

On the other hand, as an example of the technology for removing the engine room fire, Korean Patent Publication No. 2003-0018097 Patent Room No. 2003-0018097 published on March 06, 2003 is known.

This technique is based on the fire detection means for detecting a fire occurring in the engine room, the fire extinguishing means for extinguishing the fire in the engine room through fire extinguishing means for extinguishing the fire from the fire detection means and the fire detecting means. A control means for activating the means to extinguish the fire, and the fire extinguishing means includes a pump for pumping the washer fluid stored in the washer fluid storage tank, and a connection hose for spraying the pumped washer fluid from the pump. It works through the spray nozzle installed in the part.

However, since the engine room fire extinguishing device is operated after detecting the occurrence of a fire from the fire detection sensor, it is difficult to take a separate action before the fire occurs. Rather than opening the room, the adverse effect of supercharging external oxygen at the fire site at the beginning of the fire, there was a problem that can not be predicted and prevented before the fire occurs.

Accordingly, the present invention is to solve the above problems,

An object of the present invention is to provide a warning to the driver by detecting the oil vapor generated before the fire occurs in the engine system, and for heavy equipment that can lower the temperature by spraying high-pressure water to the engine high temperature part including the exhaust manifold and muffler To provide an engine room fire protection system.

It is also an object of the present invention to provide an engine room fire protection device for heavy equipment that can automatically shut off the fuel line so that the fire does not expand.

In order to achieve the above object, the present invention is connected to the engine and the engine to discharge the exhaust gas burned by the engine and the engine to form the engine driving force by burning the fuel supplied from the fuel tank installed on one side of the engine room In the engine room fire protection device for heavy equipment including an exhaust manifold and a muffler,

A fuel shutoff valve installed at one side of a fuel supply line connected to the engine from the fuel tank and selectively opened and closed by an external electric signal;

An oil vapor temperature detection sensor installed at one side of the engine room and detecting oil vapor flowing in the engine room;

A nozzle fixedly installed adjacent to the exhaust manifold and the muffler to inject water, and a water pump for pumping water into the nozzle; And

And a controller connected to the fuel shutoff valve, the vapor temperature detection sensor, and the water pump, and controlling the driving of the fuel shutoff valve and the water pump according to the oil vapor temperature detection signal detected from the vapor temperature detection sensor. It is characterized by the engine room fire protection device for heavy equipment.

An alarm for generating a warning sound is further connected to the controller, and the alarm is characterized by an engine room fire protection device for a heavy equipment that provides a warning sound for preventing a fire to the driver.

A warning light for generating a warning light is further connected to the controller, and the warning lamp is characterized by an engine room fire prevention device for heavy equipment that provides a warning light for preventing a fire occurrence to a driver.

The nozzle is fixed to the engine room side wall is characterized in that the engine room fire protection device for heavy equipment, characterized in that installed at a predetermined interval along the exhaust pipe.

The fuel cutoff valve is characterized in that the engine room fire protection device for heavy equipment consisting of a solenoid valve for receiving an electric valve opening and closing signal generated by the controller.

The fuel cutoff valve is characterized in that the engine room fire prevention device for heavy equipment comprising a second fuel cutoff valve installed on one side of the fuel return line.

The engine room fire protection device for heavy equipment according to the present invention,

When the oil vapor temperature detection sensor detects the condition of the oil vapor in the engine room and judges it to be abnormal, it automatically warns the driver, and the high-pressure cooling water is injected into the high temperature of the engine to lower the oil vapor temperature. There is an advantage to prevent the fire in advance by blocking automatically.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is a schematic diagram showing the engine room fire protection device for heavy equipment according to an embodiment of the present invention, Figure 3 is a control flow diagram of the engine room fire prevention device for heavy equipment according to an embodiment of the present invention.

Referring to the drawings, the engine room fire protection device for heavy equipment according to an embodiment of the present invention,

An engine 9 combusting fuel supplied from a fuel tank 4 installed at one side of the engine room 1 to form an engine driving force, and the engine 9 to discharge the exhaust gas combusted by the engine 9. In the engine room fire protection device for heavy equipment comprising an exhaust manifold (17) and a muffler (14) connected to one side,

A fuel cutoff valve 15 installed at one side of the fuel supply line 8 connected to the engine 9 from the fuel tank 4 and selectively opened and closed by an external electric signal;

An oil vapor temperature detection sensor 20 installed at one side of the engine room 1 to detect oil vapor flowing in the engine room 1;

A nozzle 16 fixedly installed adjacent to the exhaust manifold 17 and the muffler 14 to inject water, and a water pump 18 for pumping water into the nozzle 16;

The fuel shutoff valve 15, the oil vapor temperature detection sensor 20, and the water pump 18 are installed and connected to the fuel shutoff valve 15 according to the oil vapor temperature detection signal detected from the oil vapor temperature detection sensor 20. And a controller 10 for controlling the driving of the water pump 18.

The fuel cutoff valve 15 includes a second fuel cutoff valve 15b installed at one side of the fuel return line 7, and the second fuel cutoff valve 15b is returned to the fuel tank 4. It is suitable for shutting off fuel.

In the configuration of the present invention, the fuel shutoff valves 15a and 15b are preferably constituted by a solenoid valve that receives an electric valve open / close signal generated by the controller 10. You may comprise.

The controller 10 is further provided with an alarm 23 for generating a warning sound, the alarm 23 performs a function for providing a warning sound for preventing a fire to the driver.

In addition, the controller 10 is further provided with a warning light 22 for generating a warning light, the warning light 22 performs a function to provide a warning light for the driver to prevent fire.

The warning lights 22 and the alarms 23 may be installed at one side of the cab 5 and the engine room 1 to provide audible and visible warnings to the driver and operator.

The nozzle 16 is fixed to the side wall 2 of the engine room 1 and is installed at predetermined intervals along the exhaust pipe 26, and according to the discharge pressure of the water pump 18 and the capacity of the supply pipe 25. It is appropriate to construct a plurality of nozzles 16 continuously.

Typically, since the exhaust gas discharged through the engine 9 has a high temperature, the engine air temperature portion is formed in the exhaust manifold 17, the muffler 14, and the exhaust pipe 26, and the exhaust manifold 17 does not ignite oil vapor. ) And an aqueous solution for cooling are supplied on the surfaces of the muffler 14 and the exhaust pipe 26. The aqueous solution may be prepared from fire or water and mixtures thereof, including water, cooling water and ammonia solvents.

The water pump 18 is attached to the reservoir 19 installed on one side of the upper swing body 3, and the aqueous solution stored in the reservoir 19 is pumped to the supply pipe 25 and discharged to the nozzle 16 side. In this case, the water pump 18 receives a driving signal from the controller 10 through the control line 12 for selective driving.

In the embodiment of the present invention, the controller 10 compares the predetermined fire prevention temperature and the oil vapor temperature detected by the vapor temperature detection sensor 20, the abnormality when the vapor temperature exceeds the fire prevention temperature It is determined as a state to generate a valve closing signal of the fuel shut-off valve 15 and to perform a function of generating a pumping signal of the water pump 18.

On the other hand, when the oil vapor temperature does not exceed the fire prevention temperature, it is determined to be an abnormal state to generate the valve opening of the fuel shutoff valve 15 and to generate a pumping stop signal of the water pump 18. To perform.

In an abnormal state, the controller 10 detects and compares the vapor temperature according to a predetermined period t, and the fire prevention temperature for comparing with the detected vapor temperature is easy considering the ignition temperature or boiling point of fuel and operating oil. Can be set.

In the configuration of the present invention, the reservoir 19 and the supply pipe 25 described above can connect and install the reservoir and the coolant connecting passage for the normal engine coolant, reference numeral 13 denotes an exhaust port of the muffler 14, 24 And 27 and 28 show the control line connected to the controller 10.

Hereinafter, the operation and operation principle of the slip prevention device for construction equipment according to the present invention.

The engine room fire protection apparatus for heavy equipment according to an embodiment of the present invention, according to the vapor temperature detected by the vapor temperature detection sensor installed in the engine room (1) in advance before the oil vapor explodes or ignites You can drop it quickly.

For example, the oil vapor temperature sensor 20 detects an oil vapor temperature flowing in the engine room 1 and provides an oil vapor temperature detection signal to the controller 10, wherein the controller 10 sets a preset fire prevention temperature. And compare and determine the vapor temperature detected by the vapor temperature detection sensor 20.

When the oil vapor temperature exceeds the fire prevention temperature, it is determined that an abnormal state and a valve signal is applied to the fuel shutoff valve 15. If the fuel cutoff valve 15 is a solenoid valve, the controller 10 generates a solenoid valve closing signal for fuel flow cutoff and a pumping signal to the water pump 18.

The water pump 18 operates by the pumping signal of the controller 10 to discharge the water stored in the reservoir 19. Multiple nozzles are simultaneously sprayed by the nozzle 16 via the discharged water supply pipe 25 to the engine high temperature section, that is, the exhaust manifold 17 or the muffler 14 and the exhaust pipe 26, so that the temperature of the oil vapor is increased. By lowering below the explosion or ignition point, it is possible to prevent fire in the engine room 1 in advance.

On the other hand, in an abnormal state, the controller 10 generates a drive control signal to the warning light 22 and the alarm 23, so that the driver and the operator manual measures for fire prevention and fire suppression, for example water reservoir It is possible to promptly take additional measures including filling the fire fighting aqueous solution in (19) and stopping the engine.

In the above, the present invention has been described in detail with reference to the accompanying drawings and embodiments, the accompanying drawings and the above embodiments are illustratively to help those of ordinary skill in the art to understand the present invention. It is explained. Accordingly, the above embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention should be construed in accordance with the invention set forth in the appended claims, the scope of which should be understood by those skilled in the art. Include various changes, alternatives, and equivalents by

1 is a perspective view schematically showing a conventional heavy equipment,

Figure 2 is a schematic diagram showing a fire protection apparatus for an engine room heavy equipment according to an embodiment of the present invention,

3 is a control flow diagram of the engine room fire protection device for heavy equipment according to an embodiment of the present invention,

*** Explanation of symbols for main parts of drawing ***

1: engine room

4: fuel tank

9: engine

10: controller

15: fuel shutoff valve

16: nozzle

17: exhaust manifold

18: water pump

20: vapor temperature detection sensor

Claims (6)

An engine for heavy equipment, comprising an engine configured to combust fuel supplied from a fuel tank installed at one side of an engine room to form an engine driving force, and an exhaust manifold and a muffler connected to one side of the engine to discharge the exhaust gas burned from the engine. In the room fire protection device, A fuel shutoff valve installed at one side of a fuel supply line connected to the engine from the fuel tank and selectively opened and closed by an external electric signal; An oil vapor temperature detection sensor installed at one side of the engine room and detecting oil vapor flowing in the engine room; A nozzle fixedly installed adjacent to the exhaust manifold and the muffler to inject water, and a water pump for pumping water into the nozzle; And And a controller connected to the fuel shutoff valve, the vapor temperature detection sensor, and the water pump, and controlling the driving of the fuel shutoff valve and the water pump according to the oil vapor temperature detection signal detected from the vapor temperature detection sensor. Engine room fire protection device for heavy equipment, characterized in that it is. The method according to claim 1, A warning device for generating a warning sound is further connected to the controller, the heavy duty engine room fire protection device, characterized in that for providing a warning sound for the driver to prevent fire. The method according to claim 1, Warning lights for generating beacon light is further connected to the controller, the warning lights for the engine room fire prevention apparatus for heavy equipment, characterized in that to provide a beacon light for the fire prevention to the driver. The method according to claim 1, The nozzle is fixed to the engine room side wall, the engine room fire prevention apparatus for heavy equipment, characterized in that installed at a predetermined interval along the exhaust pipe. The method according to claim 1, The fuel cutoff valve is a heavy duty engine room fire protection device, characterized in that consisting of a solenoid valve for receiving the electric valve opening and closing signal generated by the controller. The method according to claim 1 or 6, And the fuel cutoff valve is configured to include a second fuel cutoff valve installed at one side of a fuel return line.

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